Windshield wiper



July 16,1929. (5. E. VINNEDGE 1,721,140

WINDSHIELD WIPER 'Fiied Nov. 25, 1925 2 Sheets-Sheet \I.\ L J I N VEN TOR.

y 6, 1929- a. E. VINNEDGE .721,!40

' WINDSHIELD WIPER Filed Nbv. 25, 1925 2 Sheets-Sheet 2 Patent e d July 16', 1929.

. UNITED STATES PATENT OFFICE.

GEORGE E.' vnmnnen, or omen, Taxes.

WINDSHIELD wrrnn,

Application filed November 25, 1925. Serial m. 71,465.-

Myinvention relates to improvements in mechanical devices .for removing obstructions to clear vision through automobile Windshields, street car windows and the like,

to provide a winds and the objects of m improvement are first, l iield wiper which will wipe vapor, rain, snow or the like from the 1n action.

Other objects and advantages of this in vention will appear as the following description is read in connection with the accompanying drawings.

.In the drawings Figure 1 is a view of the windshield wiper of'iny invention as applied to the ordinary two-leaf windshield of an automobile.-

Figure 2 is a view .of my invention as :11 plied to the front window of a street car or mterurban car. g

Figure 3 is a front elevation of the windshield wiper of my invention with the front half of the casing removed to expose the in- Figure 4..

4o and the lugs or bearings 23 and 24.

terior, and with one side of the mechanism in section to better showits parts.

Figure 4 is a top view of Figure 3,but

with the top of the casing removed to expose the mechanism. t

Figure 5 is a section on the line' 5 -5 of Figure 6' is a detail view of the sleeve22 v Figure 7 is a section on the line 7-7 of Figure 6.

, parts throughout, 10 is a casing or Referring specifically to the drawings, wherein like numerals denote corresppnding ousin-g enclosing the working parts with the exception of the wiper bar 25, fastened together by sleeve connections 11. 12 is a worm shaft extending through the windshield or window frame and connected toa motor, not shown,

' furnishing the operating-power. This worm f 14 revo havin at eac end'a worm 15 engaging the 7: which are to their-otors shaft 12 engages a gear 13 aflixed to another vin in bearings 16 and 16A the curved groove 21- at the ends 0 18. These rotors revolve in bearings 20 at each end. The rotors each have a diametri: cally opposite pair ofgrooves passing spirally around them in a right hand direction and a diametrically opposite pair of similar grooves passing spirally around them in a left hand or opposite direction, each right hand groove connecting to a corresponding left hand groove ina curve 21 at each end of the rotor in such mannerthat each groove of each pair is in effect a continuous groove, changing its direction at each end of rotor. The sleeves 22 shown in detail in Figures 6 and 7, move freely over the rotors 18 and each sleeve is provided with' two or more movable lugs or bearings 23 and 24, dimetrically opposite, which engage the cor- "responding grooves 19 and being of such shape and size as to move freely through said grooves and to pass the intersections-thereof without being deflected and to pass thiough f otors where the direction of the groove is changed. These lugs or bearings 23 and 24 carry with them the sleeves 22 as the rotors revolve and are given a reciprocating motionfrom one end to the other of the rotors. The lugs or.

bearings 24 are extended through the sleeves 22 and are attached to the wiper bar 25 by means of spring arms 26, caus ng wiper bar to move in a reciprocating manner with the sleeves and lugs as the rotors revolve. As a the lugs 24 follow the grooves 19 they are indined at an angle corresponding with the helix angle of the groove and being attached to'the wiper bar, cause said wiper bar to be also inclined correspondildigly so that as the wiper bar moves downwar y its edge of rubber or other suitable material is pressed closely against the exterior. surface of the glass, squeegeeing the surface free from moisture, ram or snow, and as the lug 24 changes its inclination with the'helical anglepf the oove at the lower end of the rotor by passmg through the-- curve 21, the wiper lar is caused to incline away from the surface .of the glass on its upward motion. The casing 10 may be attached to the windshield or window frame by means of screws 28 or by metal clips integral withsaid casing.

.The invention is susceptible of various changes in its form, pro rtions and minor details of construction an the right isherein reserved to make such changes as properly the scope of the appended claim.

Having described the invention, what is pivoted means, the wiper engaging the sur- 10 claimed 1s: ace to be cleaned during movement of the. A device of the kind described, com rising carriage in one direction and adapted to' be a Horsfall screw mounted adjacent e surremoved from contactwith said surface at 5 face to be cleaned, means for rotating said the end of the strokewhen the pivoted means screw, a carriage on said screw having rotates to carry the carriage in a reverse 15 pivotedmeans traveling in the threads of the direction.

' screw for reciprocatmg said carriage, a Intestinrony whereofI aflix my signature.

wiper carried by and rotatable with said 7 GEORGE E. VINNEDGE. 

